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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.4% 8TSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Bulk
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：36 V
- Current - Output：100 mA
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：8-TSSOP
- Grade：-
- Qualification：-
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Overview
The TL1431CPWRG4 is a precision programmable reference in an 8-pin TSSOP package. It features a 0.4% initial voltage tolerance and operates over a commercial temperature range of 0°C to 70°C. The device supports adjustable output voltages from approximately 2.5V to 36V using two external resistors. It provides a sink current capability ranging from 1mA to 100mA with a typical output impedance of 0.2Ω.
Feature Summary
- Precision programmable reference with specified thermal stability
- Active output circuitry for sharp turn-on characteristics
- Internal compensation ensures stability without output capacitors
Applications
- Adjustable voltage and current referencing
- Secondary side regulation in flyback SMPSs
- Zener diode replacement
- Voltage monitoring
- Comparator with integrated reference
Procurement Notes
Verify the specific suffix 'PWRG4' corresponds to the TSSOP-8 package and tape-and-reel packaging configuration. Confirm that the 'C' designation strictly limits operation to the commercial temperature range of 0°C to 70°C, as automotive or military variants utilize different suffixes. Ensure compliance with RoHS directives and lead-free manufacturing standards required for the target assembly process.
Selection Notes
Select this component when a shunt regulator or error amplifier is needed within the commercial temperature range. The 0.4% initial accuracy suits applications requiring tighter voltage tolerances than standard 1% devices. Verify that the cathode current requirements meet the minimum 1mA threshold for proper regulation and that the load capacitance remains within the stability boundary conditions defined in the datasheet.
Part Context
This part belongs to the TL1431 family of precision programmable references manufactured by Texas Instruments. The family includes variants characterized for commercial (TL1431C), automotive (TL1431Q), and military (TL1431M) temperature ranges. The device integrates an internal voltage reference and amplifier to function as a single voltage reference, error amplifier, or comparator.
Replacement Considerations
Direct substitutes include other TL1431 variants such as TL1431CDR or TL1431PW depending on package requirements. Cross-manufacturer equivalents like the TL431 series may be considered but require verification of pinout compatibility and electrical parameter alignment.
